Article View: sci.electronics
Article #1023Re: How can I turn on this bulb with TTL?
From: Tom Bruhns
Date: Mon, 31 Jul 1989 17:37
Date: Mon, 31 Jul 1989 17:37
24 lines
1295 bytes
1295 bytes
dk@thumper.bellcore.com (Dan Kahn) writes:
>
> ...
>
>need to get close to the bulb's rated current. Not only will the bulb
>light up, it'll be a lot happier not to have been put thru the shock
^^^^^^^
Actually, I don't think anyone has yet proven that light bulbs
experience happiness :-) :-)
>of the inrush surge that it experiences when placed across a stiff
>source at its rated voltage.
>
> ...
>
>Dan Kahn Bell Communications Research Morristown, NJ
>----------
But seriously, thanks for the explanation -- it's a better way to
communicate the same thought I had when I read the posting on
the ohmmeter changing the resistance of the bulb significantly
while the transistor (capable, presumably, of passing a lot more
current than the ohmmeter sources) wouldn't, in the poster's opinion,
be able to turn on the bulb because of it's cold resistance!
Technical Details
Message-ID:
<5170053@hplsla.HP.COM>Path:
arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!hplabs!hp-pcd!hplsla!tombReferences:
<4363@merlin.usc.edu>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!hplabs!hp-pcd!hplsla!tomb From: tomb@hplsla.HP.COM (Tom Bruhns) Newsgroups: sci.electronics Subject: Re: How can I turn on this bulb with TTL? Message-ID: <5170053@hplsla.HP.COM> Date: 31 Jul 89 17:37:49 GMT References: <4363@merlin.usc.edu> Organization: HP Lake Stevens, WA Lines: 24